Power Spectral Analysis
FFT and Welch PSD, full spectrum overview, infraslow through gamma band power, absolute and relative power, peak frequency, and band ratios.
Research analysis
Local selected-window analysis with parameters in view.
Inspect spectra, compare windows, track band power, estimate spectral slope, and export research bundles from anonymised recordings.
Analysis in EEG TraceLab is channel- and electrode-level signal analysis across scalp EEG, SEEG, ECoG, iEEG, and other EDF recordings. It records the selected channels, source, window, montage, filters, preprocessing state, algorithm settings, warnings, and provenance around each result.
PSDMetricsHeatmapTimeline
6Local analysis modules
0-75%Welch overlap controls
Raw / ProcessedAnalysis data sources
Analysis hub
Task-first entries for the way research review actually starts.
The Analysis tab opens with task-first entries and keeps the original modules available under Analysis Fast Entry.
Inspect spectrum
Compare windows
Compare structures/channels
Track band power over time
Estimate spectral slope
Export research bundle
Modules
From PSD curves to structural comparison.
Pro unlocks the local analysis modules used across the app's selected-window workflows.
Time-Domain Signal Metrics
RMS, peak-to-peak, variance, zero crossings, mean, min/max, flatline indicator, clipping indicator, and compact amplitude charts.
Time-Frequency and Timeline
Sliding-window PSD-derived heatmaps, band summary charts, band-power timeline trends, dominant band, and peak frequency per time bin.
Structure and slope
Structural Band Power Comparison with windows, bands, structure presets, mapping import, matrix views, and Aperiodic / Spectral Slope fitting.
Transparent controls
Each result carries the context needed to interpret it later.
Analysis controls expose the selected channels, selected window, Raw or Processed source, montage/reference state, filter/downsample state, preprocessing state, parameters, warnings, presets, and recompute actions.
Selected channels, start time, duration, and sample rate
Montage/reference and filter/downsample state
Welch segment length, overlap, taper, FFT length, and frequency resolution
Analysis History / Saved Runs
Parameter Presets for repeatable settings
Provenance JSON and export warnings
Boundary
The app keeps research output separate from clinical interpretation.
Power spectral analysis is for research signal inspection only. Results depend on EDF metadata, selected montage, preprocessing, and window settings. Not for diagnosis or clinical decision support.